quickWeather.py

#! python3
# quickWeather.py - Prints the weather for a location from the command line.
import json, requests, sys


def function():
	# Compute location from command line arguments.
	if len(sys.argv) < 2:
		print('Usage: quickWeather.py location')
		sys.exit()

	location = ' '.join(sys.argv[1:])

	# Download the JSON data from OpenWeatherMap.org's API.
	url = 'http://api.openweathermap.org/data/2.5/forecast/daily?q=%s&cnt=3' % (location)
	response = requests.get(url)
	response.raise_for_status()

	# Load JSON data into a Python variable.
	weatherData = json.loads(response.text)

	# Print weather descriptions.
	w = weatherData['list']
	print('Current weather in %s:' % (location))
	print(w[0]['weather'][0]['main'], '-', w[0]['weather'][0]['description'])
	print()
	print('Tomorrow:')
	print(w[1]['weather'][0]['main'], '-', w[1]['weather'][0]['description'])
	print()
	print('Day after tomorrow:')
	print(w[2]['weather'][0]['main'], '-', w[2]['weather'][0]['description'])

if __name__ == '__main__':
	function()